The subject of haller index radiology encompasses a wide range of important elements. Haller index | Radiology Reference Article | Radiopaedia.org. The Haller index (HI), also known as the pectus index, is a simple mathematical way to assess and describe the chest cage on CT of the thorax and is used in the detection and pre/postoperative assessment of pectus excavatum 1,5. Pectus carinatum | Radiology Reference Article | Radiopaedia.org. In this context, the average Haller index in patients requiring corrective pectus carinatum surgery is 1.8 7. Surgical repair usually results in symptomatic improvement 3 with a variety of techniques include open Ravitch procedure, open or thoracoscopic minimal cartilage resection or the reverse Nuss procedure with success rates of ~90% (range 67-100%) 5.
Haller index | Radiology Case | Radiopaedia.org. Technique for measuring Haller index on CT of the chest. Diagram by Frank Gaillard.
Case of pectus excavatum courtesy of Dr Jan Frank Gerstenmaier, Radiopaedia.org, rID: 29393 Pectus carinatum | Radiology Case | Radiopaedia.org. Axial non-contrast CT scan of the child confirmed the anterior protrusion of the sternum as seen in the X-ray. The calculated Haller index is 2.6.
Moderate pectus excavatum | Radiology Case | Radiopaedia.org. Haller index measures 3.4. Rib cage and thoracic spine are intact. From another angle, no pleural collection, pneumothorax or significant mediastinal lymphadenopathy is seen.
The Haller index (pectus index) is used in the detection and pre/postoperative assessment of pectus excavatum. Haller index 2.0-3.2 indicated mild excavatum, and corrective pectus excavatum surgery is considered with a Haller index ≥3.25. Haller index is a ratio of the transverse diameter of the chest, divided by the sagittal measure of the distance from the sternum to the vertebral body. A Haller index between 2 and 3.2 is considered a mild deformity; between 3.2 and 3.5 is moderate; 3.5 or greater is a severe deformity.
The annotated image shows: the maximal transverse diameter of the chest = 16.91 mm the narrowest AP length of the chest = 3.38 mm the Haller index (maximal transverse diameter/narrowest AP length of chest) = 5 (normal ≤ 2) Case Discussion Severe pectus excavatum with Haller index of about 3.8 (normal is <2.0). The Haller index is a simple mathematical way to assess and describe the chest cage on CT of the thorax and is used in the detection of pectus excavatum, as well as preoperative and postoperative assessment and calculated by dividing the transverse diameter of the chest by the anterior-posterior distance on CT of the chest on the axial slice ...
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