---
title: "imaging_exam_gestational_sac"
description: "Findings on radiological examination of a single gestational sac."
---

Findings on radiological examination of a single gestational sac.

**Purpose.** To record the findings on radiological examination of a gestational sac, and their interpretation.

## Source

| Model | Leg | Role |
|---|---|---|
| `openEHR-EHR-CLUSTER.imaging_exam-gestational_sac.v1` | openEHR | defines this table |

## Columns

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `body_structure`<br />`body_structure_code`<br />`body_structure_system`<br />`body_structure_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Body structure | `/items[at0001.1]` |
| `body_site`<br />`body_site_code`<br />`body_site_system`<br />`body_site_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Body site | `/items[at0002]` |
| `imaging_findings` | `text` | yes | Imaging findings | `/items[at0004]` |
| `impression`<br />`impression_code`<br />`impression_system`<br />`impression_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Impression | `/items[at0006]` |
| `comment` | `text` | yes | Comment | `/items[at0007]` |
| `mean_sac_diameter_msd_magnitude`<br />`mean_sac_diameter_msd_units` | quantity<br />`numeric`, `text` | yes | Mean Sac Diameter (MSD) | `/items[at0.2]` |
| `yolk_sac_description` | `text` | yes | Yolk sac description | `/items[at0.4]` |
| `amnion_description` | `text` | yes | Amnion description | `/items[at0.6]` |
| `number_of_embryos` | `integer` | yes | Number of embryos | `/items[at0.15]` |
| `cardiac_activity`<br />`cardiac_activity_code`<br />`cardiac_activity_system`<br />`cardiac_activity_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Cardiac activity | `/items[at0.16]` |

## Constraints

```sql
check ((body_structure_code is null and body_structure_system is null and body_structure_valueset_id is null and body_structure is null) or (body_structure is not null and body_structure_code is not null and body_structure_system is not null and body_structure_valueset_id is not null))
check ((body_site_code is null and body_site_system is null and body_site_valueset_id is null) or (body_site is not null and body_site_code is not null and body_site_system is not null and body_site_valueset_id is not null))
check ((impression_code is null and impression_system is null and impression_valueset_id is null) or (impression is not null and impression_code is not null and impression_system is not null and impression_valueset_id is not null))
check ((mean_sac_diameter_msd_magnitude is null and mean_sac_diameter_msd_units is null) or (mean_sac_diameter_msd_magnitude is not null and mean_sac_diameter_msd_units is not null))
check ((cardiac_activity_code is null and cardiac_activity_system is null and cardiac_activity_valueset_id is null and cardiac_activity is null) or (cardiac_activity is not null and cardiac_activity_code is not null and cardiac_activity_system is not null and cardiac_activity_valueset_id is not null))
```

## References

| Columns | Target | On delete |
|---|---|---|
| `body_structure_valueset_id, body_structure_code, body_structure_system, body_structure` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `body_site_valueset_id, body_site_code, body_site_system, body_site` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `impression_valueset_id, impression_code, impression_system, impression` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `cardiac_activity_valueset_id, cardiac_activity_code, cardiac_activity_system, cardiac_activity` | [`valueset_code`](/docs/tables/valueset_code) | restrict |

## Referenced by

- [`imaging_exam_gestational_sac_structured_body_site`](/docs/tables/imaging_exam_gestational_sac_structured_body_site) via `imaging_exam_gestational_sac_id`
- [`imaging_exam_gestational_sac_additional_details`](/docs/tables/imaging_exam_gestational_sac_additional_details) via `imaging_exam_gestational_sac_id`
- [`imaging_exam_result_structured_imaging_findings`](/docs/tables/imaging_exam_result_structured_imaging_findings) via `imaging_exam_gestational_sac_id`
- [`investigation_screening_specific_investigation_additiona_45e74e`](/docs/tables/investigation_screening_specific_investigation_additiona_45e74e) via `imaging_exam_gestational_sac_id`

## Child tables

2 tables hang off `imaging_exam_gestational_sac`, one row per repetition.

### `imaging_exam_gestational_sac_structured_body_site`

Child table — one row per repetition, deleted with its parent.

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `imaging_exam_gestational_sac_id` | `uuid` → [`imaging_exam_gestational_sac`](/docs/tables/imaging_exam_gestational_sac) | no | — | — |
| `position` | `integer` | no | Order of this row within its parent, from zero. | — |
| `anatomical_location_id` | `uuid` | yes | — | — |
| `anatomical_location_circle_id` | `uuid` | yes | — | — |
| `anatomical_location_relative_id` | `uuid` | yes | — | — |

#### Constraints

```sql
check (num_nonnulls(anatomical_location_id, anatomical_location_circle_id, anatomical_location_relative_id) = 1)
```

#### Unique

- `imaging_exam_gestational_sac_id, position`

#### References

| Columns | Target | On delete |
|---|---|---|
| `imaging_exam_gestational_sac_id` | [`imaging_exam_gestational_sac`](/docs/tables/imaging_exam_gestational_sac) | cascade |
| `anatomical_location_id` | [`anatomical_location`](/docs/tables/anatomical_location) | no action |
| `anatomical_location_circle_id` | [`anatomical_location_circle`](/docs/tables/anatomical_location_circle) | no action |
| `anatomical_location_relative_id` | [`anatomical_location_relative`](/docs/tables/anatomical_location_relative) | no action |

#### Indexes

- `imaging_exam_gestational_sac_structured_body_site_anatom_afce82` on `anatomical_location_id`
- `imaging_exam_gestational_sac_structured_body_site_anatom_af4641` on `anatomical_location_circle_id`
- `imaging_exam_gestational_sac_structured_body_site_anatom_1ceacd` on `anatomical_location_relative_id`

### `imaging_exam_gestational_sac_additional_details`

Child table — one row per repetition, deleted with its parent.

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `imaging_exam_gestational_sac_id` | `uuid` → [`imaging_exam_gestational_sac`](/docs/tables/imaging_exam_gestational_sac) | no | — | — |
| `position` | `integer` | no | Order of this row within its parent, from zero. | — |
| `imaging_exam_lesion_adnexal_mass_id` | `uuid` | no | Additional details | `/items[at0005]` |

#### Unique

- `imaging_exam_gestational_sac_id, position`
- `imaging_exam_gestational_sac_id, imaging_exam_lesion_adnexal_mass_id`

#### References

| Columns | Target | On delete |
|---|---|---|
| `imaging_exam_gestational_sac_id` | [`imaging_exam_gestational_sac`](/docs/tables/imaging_exam_gestational_sac) | cascade |
| `imaging_exam_lesion_adnexal_mass_id` | [`imaging_exam_lesion_adnexal_mass`](/docs/tables/imaging_exam_lesion_adnexal_mass) | no action |

#### Indexes

- `imaging_exam_gestational_sac_additional_details_imaging__bcaf75` on `imaging_exam_lesion_adnexal_mass_id`

## Value sets

| Value set | Codes |
|---|---|
| `org.openehr::openEHR-EHR-CLUSTER.imaging_exam-gestational_sac.v1/body_structure` | 1 |
| `org.openehr::openEHR-EHR-CLUSTER.imaging_exam-gestational_sac.v1/cardiac_activity` | 3 |