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  • Routine reporting of...

Routine reporting of CAC on all chest CTs could identify large number of patients with previously unknown CAC

Written By : Dr. Kamal Kant Kohli Published On 2022-05-15T19:30:09+05:30  |  Updated On 15 May 2022 7:30 PM IST
Routine reporting of CAC on all chest CTs could identify large number of patients with previously unknown CAC
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Leesburg: Current guidelines recommend visual evaluation of coronary artery calcium (CAC) on all non-gated non-contrast chest CT examinations. However, chest CT examinations are often performed with contrast material administration.

According to ARRS' American Journal of Roentgenology (AJR), routine visual ordinal coronary artery calcium (CAC) assessment on all chest CT examinations could identify a large number of patients who might benefit from preventive therapies.

"Visual ordinal CAC assessment on both contrast-enhanced and non-contrast chest CT has high diagnostic performance, prognostic utility, and interobserver agreement," confirmed corresponding author Kate Hanneman, MD, MPH, from Toronto General Hospital, University Health Network in Ontario.

Hanneman and colleagues' retrospective study included 260 patients (mean age, 60; 158 male, 102 female) who underwent both non-gated chest CT (contrast-enhanced in 116 patients; non-contrast in 144 patients) and cardiac calcium-score CT within a 12-month interval. A cardiothoracic radiologist visually assessed CAC on chest CT using an ordinal scale: absent, mild, moderate, or severe.

Ultimately, visual ordinal assessment of coronary artery calcium on both contrast-enhanced and non-contrast non-gated chest CT has high sensitivity (83% vs 90%, p=.20) and specificity (100% vs 100%, p=.99), prognostic utility (HR 4.5, p=.02 and HR 3.4, p=.003, respectively), and excellent interobserver agreement (Îş=0.89 and Îş=0.95, respectively).

"Routine reporting of CAC on all chest CT examinations regardless of clinical indication and contrast material administration could identify a large number of patients with previously unknown CAC who might benefit from preventive treatment," Dr. Hanneman added.

Visual ordinal CAC assessment on both contrast-enhanced and non-contrast chest CT has high diagnostic performance, prognostic utility, and interobserver agreement.

Routine reporting of CAC on all chest CT examinations regardless of clinical indication and contrast material administration could identify a large number of patients with previously unknown CAC who might benefit from preventive treatment.

To read the full article, click on this link:

10.2214/AJR.22.27664



American Journal of Roentgenologycoronary artery calciumCACCTarteriesradiologychestVisual ordinal scoring
Source : American Journal of Roentgenology
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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