Dermoid Cyst Detection on CT

Purpose

Detection of a dermoid cyst on CT

Tag(s)

 

Panel

Abdominal

Define-AI ID

22020021

Originator

Martha Menchaca

Lead
Martha Menchaca 

Panel Chair

Luther Adair II

Panel Reviewers

Abdominal Panel

License

Creative Commons 4.0

Status Public Comment
RadElement Set
RDES216
                               

Clinical Implementation


Value Proposition

AI for this use case would help in detecting and quantifying a benign pelvic mass which could be associated with pain or torsion in some patients. In clinical settings where radiologists are available, such detection could be used to alert the radiologist.


Narrative(s)

A 35-year-old female presents with right pelvic pain to the emergency room.  

Workflow Description

The relevant images are obtained from the modality and sent to PACS and the AI engine based on anatomic landmarks.  The images are analyzed by the engine. An algorithm evaluates the CT and, based on anatomic landmarks for the location of the pelvic adnexa, determines whether calcium  is present, absent, or indeterminate by assessing the Hounsfield Units. If present, it then assesses whether there is also fat in this area by categorizing it as  present, absent, or indeterminate. For cases returned where the algorithm returns calcium or fat, the mass is measured in mm and that measurement is displayed. The radiologist is then made aware of the need for further attention to this area.    


 

Considerations for Dataset Development


Procedures

{CT Abdomen with contrast, without contrast, CT Abdomen and pelvis}

View(s)

{Axial, Coronal, Sagittal}

Age

[0,50]

Sex at Birth

{Female}

Abdominal

{Abdominal or pelvic pain}


Other

{}

Confounding Variables

{pelvic contraception devices such as IUD, tubal hardware, pelvic fat, ruptured dermoid with fat density fluid throughout the pelvis, calcified uterine fibroids, ovarian calcifications}

Technical Specifications


Inputs

 

DICOM Study

Procedure

CT Abdomen with contrast, CT Abdomen without contrast

Views

Axial, Coronal, Sagittal

Data Type

DICOM

Modality

CT

Body Region

Abdomen and Pelvis

Anatomic Focus

Pelvic Adnexa


Primary Outputs

Fat  Detection

RadElement ID

RDE1394

Definition

Detection of Mass with Fat (between −30 and −70 Hounsfield Units)

Data Type

Categorical

Value Set

  • Absent

  • Present

  • Intermediate

Units

N/A


Calcium Detection

RadElement ID

RDE1395

Definition

Detection of Mass with Fat ( Greater or equal to 1000 Hounsfield Units)

Data Type

Categorical

Value Set

  • Absent

  • Present

  • Intermediate

Units

N/A


Secondary Outputs


Mass Measurement

RadElement ID

RDE1396

Definition

Measurement of fat or calcium containing pelvic mass

Data Type

Numeric

Value Set

N/A

Units

millimeters

Future Development Ideas


        Future considerations include detection of cysts in the pelvis, categorization of pelvic cysts, and differentiation of pelvic  cyst features.