F rom painters to cartographers to medical imagers, humans have faced the challenge of depicting the 3-dimensional (3D) world using 2-dimensional (2D) displays. The transition from planar to tomographic imaging engendered various approaches to display the physiologic information contained in 3D single-photon emission computed tomography (SPECT) and positron emission tomography (PET) cardiac stu...

Heterogeneity of myocardial blood flow and metabolism is a known feature of the coronary circulation in laboratory animals and has been reported in the normal human coronary circulation as well. This review will describe the types of heterogeneity that have been reported, how they relate to one another, and the extent to which physiologic heterogeneity of myocardial blood flow and metabolism ma...

This review article describes the principle and clinical applications of spectral analysis. Spectral analysis provides a spectrum of the kinetic components which are involved in the regional uptake and partitioning of tracer from the blood to the tissue. This technique allows the tissue impulse response function to be derived with minimal modeling assumptions. Spectral analysis makes no a prior...

background: diagnosis of coronary artery disease (cad) in patients with left bundle branch block (lbbb) is considered as a challenge in cardiology due to the low accuracy of noninvasive methods such as basal and stress electrocardiography (ecg). this diagnostic challenge can be reduced but not eliminated using dipyridamole as a stress method instead of exercise. the aim of this study was to ass...

Objective: To assess the myocardial viability on cardiac magnetic resonance imaging compared with single photon emission computed tomography scan in patients coronary artery disease.
 Study Design: This study was cross sectional study.
 Place and Duration of Study: Cardiac Magnetic Resonance Imaging Nuclear Medicine Departments a Tertiary Care Center Rawalpindi Pakistan, from Dec 2021...

We report a three-phase bone scintigraphy for the diagnosis of a peripheral bone lesion caused by systemic sarcoidosis. A 32-year-old man with suspected osteomyelitis of the right forefinger underwent three-phase bone scintigraphy with Tc-99m hydroxymethylene diphosphonate (HMDP) and single-photon emission computed tomography/computed tomography (SPECT/CT). The lesion was rich in blood flow acc...

Emission tomography such as positron emission tomography (PET) and single-photon emission computed tomography (SPECT) can provide in vivo measurements of dynamic physiological and biochemical processes in humans. A limitation of both PET and SPECT is their inability to provide precise anatomic localisation due to relatively poor spatial resolution and high noise levels when compared to magnetic...

TAPANI TIKKAKOSKI Editor In patients with intractable epilepsy refractory to medication, surgical treatment may be needed. Magnetic resonance imaging (MRI) is an essential neuroimaging tool in assisting the identifi cation of epileptogenic lesions. MRI at 3T has been found to perform better than 1.5T in terms of image quality, detection of structural lesions, and characterization of lesions. Th...

Simple partial status epilepticus occurs more rarely than other forms of status epilepticus. This report describes two patients with temporal lobe epilepsy who experienced simple partial status epilepticus. Results show that basal ganglia and the mid-brain are activated during simple partial status epilepticus by blood perfusion single-photon emission computed tomography (SPECT) and subtraction...

Molecular imaging has witnessed a tremendous change over the last decade. Growing interest and emphasis are placed on this specialized technology represented by developing new scanners, pharmaceutical drugs, diagnostic agents, new therapeutic regimens, and ultimately, significant improvement of patient health care. Single photon emission computed tomography (SPECT) and positron emission tomogra...