Normal Anterior Junction Line Thickness on Radiography
The normal anterior junction line on PA chest radiography measures less than 1 mm; thickening or displacement suggests mediastinal pathology.
Cardiothoracic
27 entries
A
Normal Aortic Nipple Diameter on Chest Radiography
Normal aortic nipple maximal diameter is less than 4.5 mm on PA chest radiography; larger measurements may indicate venous or vascular pathology.
Normal Azygos Vein Arch Size on Chest Radiography
Normal azygos vein arch diameter is less than 7 mm on posteroanterior chest radiography, with enlargement indicating cardiovascular or systemic disease.
B
Normal Bronchus Intermedius Posterior Wall Thickness on Radiography
Normal bronchus intermedius posterior wall thickness on lateral chest radiography is less than 3 mm — a key landmark for detecting mediastinal and pulmonary pathology.
C
Normal Cardiac Diameter Size on Chest Radiography
Reference values for normal cardiac diameter on chest radiography in adults and children aged 4–16, including transverse and posteroanterior measurements.
Normal Cardiothoracic Index Size on Radiography
Reference values for the normal cardiothoracic index on chest radiography across all age groups, from neonates to adults.
Normal Carina Angle Size on Chest Radiography
The normal carina angle on posteroanterior chest radiography measures 40–80°, with widening suggesting left atrial or subcarinal pathology.
D
Normal Descending Right Pulmonary Artery Size on Radiography
Normal descending right pulmonary artery diameter on PA chest radiograph is up to 16 mm — a key landmark for detecting pulmonary hypertension.
Normal Diaphragm Flattening Size on Chest Radiography
Normal diaphragm flattening on PA chest radiography measures less than 1.5 cm, serving as a key indicator of pulmonary hyperinflation.
H
Normal Haller Index: CT Measurement for Pectus Excavatum
Normal Haller Index on CT is less than 2.5; values ≥3.25 typically indicate surgical correction for pectus excavatum.
L
Normal Left Atrium Diameter Size on Radiography
Normal left atrium diameter on posteroanterior chest radiography measures less than 7 cm, a key threshold for detecting left atrial enlargement.
Normal Left Pulmonary Artery Size on Chest Radiography
Normal left pulmonary artery diameter is less than 18 mm on lateral chest radiography, a key threshold for detecting pulmonary arterial enlargement.
Normal Left Pulmonary Artery Size on Chest X-Ray
Normal left pulmonary artery diameter on chest radiography measures up to 18 mm on the lateral view, a key threshold for detecting pulmonary hypertension.
M
Normal Main Left Bronchus Diameter on Radiography
The normal main left bronchus diameter on posteroanterior radiography measures less than 2.3 cm, a key threshold for detecting bronchial pathology.
N
Normal Neonatal Trachea Diameter on Radiography
Reference values for normal neonatal tracheal diameter on radiography, including AP and lateral measurements at C5, T1, and T3 levels.
P
Normal Posterior Junction Line Thickness on Radiography
The normal posterior junction line measures less than 1 mm on PA chest radiography; understanding this landmark helps detect mediastinal pathology early.
Normal Posterior Tracheal Wall Thickness on Radiography
Normal posterior tracheal wall thickness on lateral chest radiography measures less than 2.5 mm — a key landmark for detecting retrotracheal pathology.
Normal Pulmonary Artery Trunk Size on CT and MRI
Reference values for normal pulmonary artery trunk diameter on CT and MRI, including sex-specific averages and the upper limit of 28.6 mm.
R
Normal Retrosternal Space Size on Chest Radiography
Normal retrosternal space on lateral chest radiograph measures less than 2.5 cm; enlargement is a key indicator of pulmonary hyperinflation.
Normal Right Descending Pulmonary Artery Size on Radiography
Normal right descending pulmonary artery diameter is less than 16 mm on posteroanterior chest radiography, a key threshold for detecting pulmonary hypertension.
Normal Right Main Bronchus Diameter on Radiography
The normal right main bronchus maximal diameter on posteroanterior radiography is less than 2.4 cm, a key threshold for detecting airway pathology.
Normal Right Paratracheal Stripe Width on Chest X-Ray
The normal right paratracheal stripe measures less than 4 mm on anteroposterior chest radiography; widening suggests mediastinal pathology.
Normal Right Paratracheal Stripe Width on Radiography
The normal right paratracheal stripe measures less than 4 mm on PA chest radiography; widening suggests mediastinal pathology requiring further evaluation.
T
Normal Thymus Diameter Size on CT by Age Group
Reference CT measurements for normal thymus diameter in children and adolescents, including anteroposterior, transverse, and craniocaudal dimensions by age group.
Normal Trachea Coronal/Sagittal Diameter Ratio on X-Ray & CT
The normal trachea coronal-to-sagittal diameter ratio exceeds 0.6 on radiography and CT, helping detect saber-sheath deformity and other tracheal abnormalities.
Normal Tracheal Maximal Diameter Size on Radiography
Normal tracheal maximal diameter on posteroanterior radiography measures less than 3 cm; values exceeding this threshold may indicate tracheomegaly or pathology.
Normal Tracheoesophageal Stripe Thickness on Radiography
The normal tracheoesophageal stripe measures less than 5.5 mm on lateral chest radiography; thickening suggests posterior mediastinal pathology.
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