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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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Updated: Jun 3, 2026

Full-Endoscopic Surgery for Hypothalamic Hamartoma Resection

Full-Endoscopic Surgery for Hypothalamic Hamartoma Resection

Published on: April 12, 2024

CT- and computer-based features of small hamartomas.

Yao Huang¹, Dong ming Xu, Artit Jirapatnakul

¹Cancer Hospital (Institute), Chinese Academy of Medical Sciences & Peking, Union Medical University, Beijing, PR China.

Clinical Imaging

|March 8, 2011

Summary

This summary is machine-generated.

Characteristic computed tomographic (CT) features of pulmonary hamartomas were identified. These imaging findings can help differentiate hamartomas from other small lung nodules.

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Area of Science:

Radiology
Pulmonary Medicine
Oncology

Background:

Pulmonary hamartomas are benign lung tumors.
Distinguishing hamartomas from malignant nodules on imaging can be challenging.

Purpose of the Study:

To identify characteristic computed tomographic (CT) features of pulmonary hamartomas.
To evaluate computer-derived imaging metrics for characterizing these nodules.

Main Methods:

Retrospective review of CT scans from 21 confirmed pulmonary hamartomas.
Analysis of nodule characteristics: consistency, size, shape, edge, compactness, sphericity, surface regularity, and volume doubling time (VDT).

Main Results:

All hamartomas were solid, round or lobulated, with smooth edges.
Computer analysis revealed compact, spherical nodules with regular surfaces and sharp margins.
Most hamartomas exhibited a VDT longer than 450 days.

Conclusions:

Pulmonary hamartomas present with consistent CT features.
Radiologist and computer-derived metrics aid in differentiating hamartomas from other lung nodules.