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Related Concept Videos

Computed Tomography

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...

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Related Experiment Video

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Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

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Tomographic Small-Animal Imaging Using a High-Resolution Semiconductor Camera.

G A Kastis¹, M C Wu², S J Balzer¹

¹Department of Radiology, Division of Nuclear Medicine, University of Arizona, Tucson, AZ 85724 ; Optical Sciences Center, University of Arizona, Tucson, AZ 85721.

IEEE Nuclear Science Symposium Conference Record. Nuclear Science Symposium

|November 17, 2015

Summary

This summary is machine-generated.

A new compact semiconductor camera offers high-resolution imaging for nuclear medicine. This system achieves 1-2 mm spatial resolution, enabling detailed tomographic imaging of phantoms and mice.

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Area of Science:

Nuclear Medicine
Medical Imaging
Semiconductor Detectors

Background:

Nuclear medicine relies on sensitive imaging systems for diagnosis and research.
Existing systems can be bulky and expensive, limiting accessibility.
Development of compact, high-resolution cameras is crucial for advancing the field.

Purpose of the Study:

To develop and evaluate a novel, high-resolution, compact semiconductor camera for nuclear medicine.
To assess the system's performance in imaging phantoms and small animal models.
To demonstrate the potential of CdZnTe detector technology in this application.

Main Methods:

A modular system was designed using a 64x64 Cadmium Zinc Telluride (CdZnTe) detector array and a tungsten collimator.
The detector was integrated with a multiplexer readout via indium-bump bonding.
Tomographic projections were acquired by rotating phantoms and anesthetized mice, with acquisition times of 60-90 seconds per projection.

Main Results:

The camera system achieved a spatial resolution of 1-2 mm in reconstructed images.
Tomographic images of a line phantom and a mouse bone scan were successfully obtained.
The compact design (17 cm x 5.3 cm x 3.7 cm) facilitates versatile application.

Conclusions:

The developed compact semiconductor camera provides high-resolution tomographic imaging capabilities for nuclear medicine.
The system demonstrates excellent performance for both phantom studies and in vivo mouse imaging.
This technology holds promise for improved nuclear medicine diagnostics and preclinical research.