OOIR: Observatory of International Research

Papers

(The median citation count of Clinical Physiology and Functional Imaging is 1. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-05-01 to 2026-05-01.)

Article	Citations
How does a CIED presence influence chances and safety of haemodialysis access? Conclusions from over 3000 thoracic venografies	27
Issue Information	25
The effects of fasting and dehydration on pupillary light reflex as detected by pupillometry	20
Lactate and ammonia measurements during cardiopulmonary exercise testing and its recovery phase—Consideration of age and sex in its interpretation	17
Prefrontal NIRS signal is unaffected by forehead Doppler flux during incremental cycling exercise	16
The impact of blood flow restricted electrical stimulations on recovery from muscle damage	15
Mechanisms of cerebral vasospasm and cerebral ischaemia in subarachnoid haemorrhage	13
	11
Test‐retest reliability of cardiopulmonary exercise test‐derived metrics in individuals with COPD versus healthy controls	11
Association between appendicular skeletal muscle mass‐to‐visceral fat area ratio and cardiovascular disease: A cross‐sectional study	11
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Agreement between self‐reported and objectively assessed physical activity among out‐of‐hospital cardiac arrest survivors	11
Association of low mechano‐energetic efficiency and prognosis in liver cirrhosis	10
Relationship between heart rate variability and echocardiography indices of cardiac function in healthy individuals	9
Pulmonary volumes and signs of chronic airflow limitation in quantitative computed tomography	9
Characterizing forearm skeletal muscle composition and function in breast cancer‐related lymphedema using B‐mode ultrasonography	8
Metabolic tumour volume in Hodgkin lymphoma—A comparison between manual and AI‐based analysis	8
Effects of combined training on nonshivering thermogenic activity of muscles in individuals with overweight and type 2 diabetes	8
Tilt table testing, methodology and practical insights for the clinic	7
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Erratum	7
Issue Information	7
Influence of physical post‐exercise recovery techniques on vagally‐mediated heart rate variability: A systematic review and meta‐analysis	7
Age‐related changes in muscle thickness, echo intensity and shear modulus of the iliocapsularis	7
Rebooting nuclear medicine specialist education under the COVID‐19 pandemic: From plenary lectures to active e‐learning	6

FDG and FAPI PET–based response evaluation to reduced‐dose nivolumab in pleural mesothelioma: A case report	6
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Comparability of childhood blood pressure measurements with two different devices	6
Influence of physical fitness of coronary disease patients on vagal reentry and heart rate recovery after exercise with and without fluid replacement	6
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Software development to optimize the minimal detectable difference in human airway images captured using optical coherence tomography	6
A preliminary study of changes in carotid artery elasticity in type 2 diabetes mellitus	6
Does muscle growth mediate changes in a nonspecific strength task?	6
The patterns in urine excretion and transvascular fluid exchange in human subjects during intravenous fluid infusion: A quantitative analysis	6
Effect of 7‐day dietary supplementation with grape seed extract on cardiac autonomic and hemodynamic responses in elevated and stage 1 hypertension	6
Impact of regular cold exposure on electrical skin resistance in patients with joint degenerative diseases	5
Adults with lower‐limb amputation: Reduced multifidi muscle activity and extensor muscle endurance is associated with worse physical performance	5
Correcting for subcutaneous fat: Does it improve the correlation between vastus lateralis echo intensity and physical performance in older women?	5
Within‐session repeatability of Doppler ultrasound leg blood flow assessments during exercise in patients with chronic obstructive pulmonary disease	5
Relationship between heart rate variability and performance in eccentric training with blood flow restriction	5
Heart rate stability in a clinical setting and after a short exercise in healthy male volunteers	5
Chest three‐dimensional‐computed tomography imaging data analysis for the variation of exercise capacity after lung lobectomy	5
Pulmonary transit time has close relation with pulmonary pulse wave transit time in normal subjects	5
Issue Information	5
Reproducibility and agreement of pulse wave velocity and augmentation index over repeated assessments using two different devices in adolescents	5
Issue Information	5
Positive effect of erythromycin on ineffective oesophageal motility in laryngopharyngeal reflux patients: Room for a novel treatment?	4
Characterization of sympathicotonia in post‐covid condition (long covid) and healthy controls using long‐term electrodermal activity (EDA) follow‐up	4
Young type 1 diabetes subjects sway more than healthy persons when somatosensory system is challenged in static standing postural stability tests	4
Responses to exercise in systemic sclerosis‐associated interstitial lung disease	4
Four‐ to seven‐year follow‐up of pharmacological postconditioning with mangafodipir as an adjunct to primary PCI in ST‐segment elevation myocardial infarction	4
T1 mapping and reduced field‐of‐view DWI at 3.0 T MRI for differentiation of thyroid papillary carcinoma from nodular goiter	4
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Impact of moderate‐intensity aerobic exercise in combined hypoxic and hot conditions on endothelial function	4
Issue Information	4
Adolescent obesity and insulin resistance: The role of anthropometric indicators in metabolic health	4
Improving sensitivity through data augmentation with synthetic lymph node metastases for AI‐based analysis of PSMA PET‐CT images	3
Intra‐ and inter‐observer reliability of ultrasound muscle thickness of gluteal and biceps femoris long head in individuals with and without SCI	3
Relationships between trunk tissue distribution, metabolic risk factors and physical performance in young people—A pilot study	3
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Effects of different exercises on respiratory parameters: A randomized controlled trial	3
Predictors of subclinical atherosclerosis in asymptomatic healthy non‐diabetic postmenopausal women	3
The effect of lower limb strengthening exercise on orthostatic blood pressure and the skeletal muscle pump in older people with orthostatic hypotension	3
Issue Information	3
Exercise intensity affects circulating C1q/TNF‐related proteins and follistatin‐like 1 concentrations	3
Minimum detectable change estimates of heart‐to‐finger arterial pulse wave conduction time in cardiovascular‐healthy young adults	3
Detailed investigation of multiple resting cardiovascular parameters in relation to physical fitness	2
Short‐ and long‐term prognostic performance of exercise ECG and myocardial perfusion SPECT	2
Clearance of mannitol for assessment of glomerular filtration rate in chronic kidney disease: A validation against iohexol clearance	2
Impact of structural factors around the accessory nerve on the pathogenesis of essential neck and upper‐back stiffness: a sonographic investigation	2
Enhanced interleukin‐6 in human adipose tissue vein after sprint exercise: Results from a pilot study	2
Cardiopulmonary exercise testing to indicate increased ventilatory variability in subjects with dysfunctional breathing	2
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Association between abdominal muscle stiffness, diaphragm thickness and peak expiratory flow in younger versus older adults	2

Heart rate increase results in case of positional venous entrapment	2
The effect of inhaled dry salt on pulmonary mucociliary clearance in obstructive lung disease: A randomised, placebo‐controlled, crossover study	2
Relationship between resting elasticity of quadriceps at multiple knee flexion angles and explosive athletic performance	2
Cutting corners in muscle measurements with ISarcoPRM!	2
Issue Information	2
Issue Information	2
Considerations for fasting and dehydration effects on pupillary light reflex: A commentary on Adam et al. (2025)	2
Heart rate variability and haemodynamic function in individuals with hypertrophic cardiomyopathy	2
Relation of changes in PEF and FEV1 in exercise challenge in children	2
Treatment side affects exercising microvascular oxygenation response in active breast cancer survivors: A pilot study	2
Impact of a cuff‐based device calibration method on the agreement between invasive and noninvasive aortic and brachial pressure	2
Mechanical interactions between the biceps femoris long and short heads: Implications for T‐junction hamstring injuries	2
Point‐of‐care β‐hydroxybutyrate measurement predicts adequate glucose metabolism suppression in cardiac FDG‐PET/CT	2
Age differences and reliability of the skeletal muscle quality measurements in women and their relationship with cardiovascular risk	2
	2
The effect of adjuvant radiotherapy on skin biophysical properties in patients with breast cancer at risk for breast lymphedema: A prospective study	2
Nuclear medicine in hematology: Bridging diagnostics and therapy	1
Early diagnosis of subclinical left ventricular dysfunction in postmenopausal women with rheumatoid arthritis	1
Agreement of concomitant cardiac output measurement by thoracic bio‐impedance and inert gas rebreathing in healthy subjects	1
COVID‐19 is associated with cardiac structural and functional remodelling in healthy middle‐aged and older individuals	1
Author's reply to ‘considerations for fasting and dehydration effects on pupillary light reflex: A commentary on Adam et al.’	1
	1
Acute cardiac autonomic and hemodynamic responses to resistive breathing: Effect of loading type and intensity	1
Automated classification of PET‐CT lesions in lung cancer: An independent validation study	1
Changes in cardiac function in Navy divers during four days of successive dives in very cold diving conditions	1
Relation of changes in peak expiratory flow (PEF) and forced expiratory volume in 1 s (FEV₁) during bronchoconstriction	1
Issue Information	1
	1
Detection of upper airway obstruction by diaphragm ultrasound combined with inspired volume measurement	1
Frequency of superscan on bone scintigraphy: A systematic review	1
Peripheral quantitative computed tomography is a valid imaging technique for tracking changes in skeletal muscle cross‐sectional area	1
Cardiopulmonary exercise testing to observe subclinical abnormalities in cardiopulmonary function in patients undergoing peritoneal dialysis	1
Comparative analyses of predictive equations for peak oxygen uptake in Japanese cardiac rehabilitation patients	1
Impact of the COVID‐19 pandemic on exercise tolerance and patient outcomes with Phase III cardiac rehabilitation in Japan: A multicenter study	1
Safety and feasibility of cardiopulmonary exercise testing in head and neck cancer survivors	1
Effect of low‐intensity exercise with blood flow restriction during rest intervals on muscle function and perception	1
Left atrial contraction strain during a Valsalva manoeuvre: A study in healthy humans	1
DXA‐based estimation of body volume in 4‐compartment models: Validating and modifying the Smith‐Ryan equation	1
The impact of epicardial adiposity on STEMI outcomes: Insights from a prospective cohort	1
Skin perfusion pressure, distal blood pressure vs. trans cutaneous oxygen pressure for predicting wound healing after major amputation	1
Acute hemodynamic responses from low‐load resistance exercise with blood flow restriction in young and older individuals: A systematic review and meta‐analysis of cross‐over trials	1
Influence of different time framings, reconstruction algorithms and post‐processing methods on the quantification of myocardial blood flow from ¹³N‐NH₃ PET images	1
Feasibility and early effects of bed‐cycling eccentric training: Potential clinical applications	1
Wearing a surgical mask: Effects on gas exchange and hemodynamic responses during maximal exercise	1
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Multiparametric magnetic resonance imaging: A robust tool to test pathogenesis and pathophysiology behind nephropathy in humans	1
Intersession reliability of lower limb muscle strength assessments in adults with obesity eligible for bariatric surgery	1
Blood pressure and vascular responses during exercise in offspring of diabetes parents: The role of the muscle metaboreflex	1
Palpation versus hand‑held Doppler for identifying lower‑limb peripheral arteries: Time‑efficiency and reliability in healthy adults	1
Deep learning‐based 3D classification of head and neck cancer PET/MRI: Radiologist comparison and Grad‐CAM interpretability	1
Resting strain analysis to identify myocardial ischemia in patients with advanced chronic kidney disease	1
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Acute exercise affects dual‐energy X‐ray absorptiometry body composition estimates but not standardised ultrasound measurements of subcutaneous adipose tissue	1
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Effect of cryothermic and radiofrequency Cox‐Maze IV ablation on atrial size and function assessed by 2D and 3D echocardiography, a randomized trial. To freeze or to burn	1
Total peripheral resistance fine‐tunes mean arterial pressure to a set level induced by isometric handgrip	1
Issue Information	1
Acute muscular and cardiovascular responses to high load training with pre‐exercise blood flow restriction	1
The effect of eccentric arm cycling on muscle damage and injury‐related biomarkers	1
Comparison of the Discovery A and Stratos DR densitometers for assessing whole‐body and regional bone mineral density and body composition	1
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The value of the HFA‐PEFF and H2FPEF scores in determining the phenotypes and comorbidity burden in heart failure with preserved ejection fraction	1
Right ventricular function in severe aortic stenosis assessed by echocardiography and MRI	1
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Microvascular effects of a mixed meal tolerance test: a model validation study	1
Physiological alterations around the menopause transition—A 2‐year follow‐up in PRE, PERI, and POST menopause females	1