RadStage

RadStage

Please choose a staging/scoring system from the body region menus on the left.

About RadStage

RadStage is a collection of calculators, staging tools, and guidelines meant to streamline the radiology workflow by bringing frequently used tools together in one easy-to-use place.

This list is curated by Dr. Tom Anderson, a radiologist specializing in body imaging, primarily for his own use, but shared freely for the benefit of all.

RadStage was designed and coded from scratch with thanks to jQuery, Bootstrap, Font Awesome, and FlatIcon.

Many additional scoring and staging systems are planned, including, but not limited to:

ACR recommendation tables
O-RADS (when it comes out)
Lung-RADS
AAST laceration/hematoma scoring
Fracture grading
...and many others

Tips and Tricks

RadStage is mobile friendly and can be added to your smart phone's home screen as if it were an app.
When entering numbers in any of the calculators, you can use the '-' and '+' keys either at the top of your keyboard or on a number pad to navigate between fields, just like you would use 'tab' and 'shift+tab'. If you're using a number pad on your keyboard, your hand never needs to leave number pad to enter data.
The calculators will submit automatically when enough fields have been filled in and results will update each time there is a change to the information provided.
Press enter or move to a different field to submit the results.

Fleischner Pulmonary Nodule Follow Up Recommendations

Intended for patients > 35 years old with no history of malignancy.

Number of nodules detected

Single Multiple

Type of Nodule

Solid Part-Solid Subsolid

Risk of malignancy?

Low Risk High Risk Unknown

Size of largest nodule (mm)

< 6 ≥ 6 and ≤ 8 > 8

Type of Study:

Full chest CT. Incompletely evaluated Chest.

PI-RADS v2.1

Assign PI-RADS score to prostate nodules based on location within the prostate.

Location:

Peripheral Zone Transition Zone

Show/Hide Puech Prostate Zones

Adrenal Washout Calculations for CT

Enter HU rounded to nearest integer

Phase	HU
Noncontrast
60-75s post contrast
15 minute delay

Liver lesion characterization.

Li-Rads and OPTN are detailed separately.

Each additional imaging characteristic narrows the provided differential.

Enhancement Characteristics and Size

Enhancement is described relative to surrounding liver parenchyma

Maximal diameter (cm)

As measured on late arterial or portal venous phases

<1 ≥1 and <2 ≥2 and ≤5 >5

Interval growth of more than 50% from ≤ 6 months ago

Both measurements must be from the same contrast phase, either late arterial or portal venous.

Only valid if there has been no interval ablation.

No Yes N/A

Late Arterial Enhancement

Hypo Iso Hyper

Portal Venous Enhancement

Hypo Iso Hyper

Delayed Enhancement

Hypo Iso Hyper

Peripheral enhancement on portal venous or delayed phases (pseudocapsule)?

No Yes

Previous biopsy showing Hepatocellular Carcinoma?

No Yes

Ultrasound, CT, and MRI appearances

US appearance compared with surrounding parenchyma

Anechoic Hypoechoic Isoechoic Hyperechoic

Noncontrast CT appearance compared with surrounding parenchyma

Hypoattenuating Isoattenuating Hyperattenuating

MRI: T1

Hypointense Isointense Hyperintense

MRI: T2

Hypointense Isointense Hyperintense

MRI: Drop in signal on out of phase imaging compared with in phase

No Yes

Nascet method of calculating stenosis

Use any units as long as you use the same units in both fields.

	Measurements
Narrowest Diameter
Normal Diameter

OPTN and LI-RADS classification

If study is incomplete or degraded: OPTN 0; LR-NC (LR-TR nonevaluable if previously treated).

Enhancement is described relative to surrounding liver parenchyma.

If unsure about a feature, mark it as absent.

Required for both OPTN and LI-RADS:

Maximal diameter (cm)

As measured on late arterial or portal venous phases

<1 ≥1 and <2 ≥2 and ≤5 >5

Late Arterial Phase Hyperenhancement

No Yes

Washout?

Hypoenhancing compared to background parenchyma on portal venous or 3 minute delayed sequences?

No Yes

Pseudocapsule?

Peripheral enhancement on portal venous or delayed phases?

No Yes

Was this lesion present on prior studies or previously biopsied or treated?

No Yes

Only required for LI-RADS:

Tumor in adjacent vein?

No Yes

≥1 finding favoring benignity?

No Yes

Size stability > 2 years
Size reduction
Parallels blood pool
Undistorted vessels
Iron in mass, more than liver
Marked T2 hyperintensity
Hepatobiliary phase isointensity

≥1 finding favoring malignancy?

No Yes

Favoring malignancy in general, not HCC in particular

US visibility as discrete nodule
Subthreshold growth
Restricted diffusion
Mild-moderate T2 hyperintensity
Corona enhancement
Fat sparing in solid mass
Iron sparing in solid mass
Transitional phase hypointensity
Hepatobiliary phase hypointensity

Favoring HCC in particular

Nonenhancing capsule
Nodule-in-nodule
Mosaic architecture
Blood products in mass
Fat in mass, more than adjacent liver

Suspicious for non-HCC malignancy?

No Yes

Quantification of hepatic siderosis (Rennes Method)

All sequences TR 120 ms, FA 20

Enter ROI averages for liver and paraspinal muscles, rounded to the nearest integer.

TE (ms)Seq	LiverL1	LiverL2	LiverL3	MuscleM1	MuscleM2
2
4
9
14
19

Quantification of hepatic siderosis (R2* method)

Select Field strength and enter 2-4 ROI values from R2* sequence.

1.5T 3T

	Values

Quantification of hepatic steatosis

If values are obtained from the same excitation, enter only liver values for fat fraction.

If obtained from different excitations, enter liver and spleen values for fat percentage.

	In Phase	Out of Phase
Liver
Spleen (optional)

Ellipsoid volume from three orthogonal measurements

Provide three measurements in the same unit for ellipsoid volume.

Results are in the same units as entered but raised to the third power.

	Values
Measurement 1
Measurement 2
Measurement 3

ACR TI-RADS

Composition

Cystic or almost completely cystic Spongiform Mixed cystic and solid Solid or almost completely solid Composition cannot be determined because of calcification

Echogenicity

Anechoic Hyperechoic or isoechoic Hypoechoic Very hypoechoic Echogenicity cannot be determined

Shape

Wider-than-tall Taller-than-wide

Margin

Smooth Ill-defined Lobulated or irregular Extra-thyroidal extension

Echogenic Foci

None or large comet-tail artifacts Macrocalcifications Peripheral (rim) calcifications Punctate echogenic foci

Results will appear here automatically when all required data have been entered.